JPH0636465Y2 - Grain drying equipment - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field of the Invention The present invention is directed to the grain circulating in the tempering tank and radiated by far-infrared radiant heat whose radiation direction is freely changed and jetted in parallel with the grain flow. The present invention relates to a grain drying device that can rapidly obtain uniformly dried grains without unevenness in drying by being sequentially exposed to hot dry air.

2. Description of the Related Art Conventionally, a circulation type grain dryer has been proposed which irradiates far-infrared rays to a circulating fluid grain to promote moisture diffusion and movement inside the grain, thereby enhancing the tempering effect and drying. It is known and described before the application, for example, in Japanese Patent Laid-Open No. 61-138080, and its contents will be described with reference to FIGS.

That is, the hot air chamber 5, the grain drying chamber 6, and the exhaust air chamber 7 are arranged side by side, and the grain chamber 2 is placed on the ventilation drying section 3 for drying the grain with hot air to form the dryer main body 1. An elevating machine 4 is installed upright on the side to provide a drying device in which a grain circulation process is formed. Then, a vibratory grain-feeding path 8 for a dryer provided with a far-infrared device 9 for preliminary drying is provided in the grain circulation step.

Problems to be solved by the invention By the way, in this type of circulating grain dryer,
In order to improve the tempering effect and accelerate the drying,
Far-infrared rays are irradiated to the grain during the circulation process to raise the grain temperature and carry out moisture diffusion transfer inside the grain.

However, if the grain that has become stagnant is left in the grain room for a considerable time without being exposed to dry hot air, part of the water that has exuded from the inside of the grain spontaneously evaporates and condensation occurs on the grain wall. As a result, unevenness of runoff occurs and unevenness of drying occurs in the grain, and it is not possible to continuously obtain dried grains of uniform quality, but there is a problem that the drying of grains is not promoted.

Means for Solving Problems The present invention solves the above problems, and the contents thereof will be described below with reference to FIGS. 1 and 2 corresponding to the embodiments.

That is, the dryer main body 101 is formed in a horizontally long rectangular tube shape that is long in the front-rear direction. A hot air blowing chamber 102 and a dust exhausting chamber 103 are provided symmetrically on the left and right sides of the dryer main body 101 in a laterally long direction. At the upper part of the tempering tank 109 provided between the hot-air blowing chamber 102 and the dust-exhausting air chamber 103, one end is connected to the hot-air blowing chamber 102, and a plurality of hot-air blows downward a part of the dry hot-air. The ejection ducts 127 are provided at intervals. A far-infrared heater 130 capable of swinging is arranged in the tempering tank 107 above the hot air jet duct 127.

Action When a predetermined amount of grain is filled in the tempering tank 109, the supply of the grain is stopped, dry hot air is generated in the hot air blowing chamber 102, and at the same time the inside of the dust exhaust air chamber 103 is brought to a negative pressure state.

By the way, the dry hot air generated in the hot air blowing chamber 102 is exposed to the grains that are vertically downflowed in the tempering tank 109 due to the negative pressure action in the dust blowing chamber 103, and is dried to some extent. The dried grain is returned to the upper part of the tempering tank 109 to perform a circulating flow action to finish and dry to a predetermined water content.

By the way, in the cycle drying work as described above, the far-infrared heat radiated from the far-infrared heater 130 which is oscillated when the circulated and fluidized grain is supplied to the upper part of the tempering tank 109 is made uniform. The temperature inside the bath grain is raised uniformly. As a result, the internal moisture of the grain rapidly migrates to the surface, and the moisture diffusion and migration action is smoothly performed, and when the grain that has been in the heat retention state due to the above action sequentially flows down in the tempering tank 109. A plurality of hot air blowing ducts 127 from the hot air blowing chamber 102
A part of the dry hot air jetted so as to flow in parallel with the direction of flow of grains through the is used to perform the tempering action while allowing the moisture that has exuded to the surface to loosen and evaporate.

Therefore, grain that can be circulated and flowed many times is a tempering tank.
Whenever it returns to the upper part of 109, it is exposed to far infrared radiant heat and dry hot air, so that the tempering action can be reasonably performed, the drying is promoted, and the evaporated dry water causes the evaporated water to be evaporated. Since it is removed quickly, the dew condensation phenomenon that tends to occur due to the temperature difference on the inner wall of the tempering tank 109 is eliminated, and the grain is allowed to flow down uniformly without causing downflow unevenness, and uniform dried grains can be easily obtained. it can.

Embodiment An embodiment of the grain dryer according to the present invention will be described with reference to the drawings.

In the drawing, 101 is a dryer main body having a horizontally long rectangular tube shape that is long in the front-rear direction, and a hot air of a substantially similar shape in which the width length is sequentially increased from the upper part to the lower part on both left and right sides of the dryer main body 101. The air blow chamber 102 and the dust exhaust chamber 103 are arranged symmetrically. And, in the space substantially central position between the hot air blowing chamber 102 and the dust blowing chamber 103, in the direction orthogonal to the lateral direction, one side is connected to the hot air blowing chamber 102 and the blowing window 105 in the form of a plurality of stoppers. Comprising a hot air chamber 104 and a dust exhausting air chamber 103 on one side via a wind exhaust window 107
06 ... is placed between the hot air chamber 104 and the exhaust chamber 106 in the drying passage 10
8 are formed alternately so as to form the drying passage 108.
The upper end side of the hot air chamber 104 ... and the exhaust air chamber 106 ... are connected to the tempering tank 109 formed on the upper side, and the lower end side of the hot air chamber 104 ... and the exhaust air chamber 106. Yamagata partition wall 110 arranged in multiple rows directly below in the horizontal direction.
A plurality of intersecting downflow supply chambers 111 formed by ...
Is connected to. The hot air chamber 104 ... and the exhaust chamber 106 ... both have a ventilation surface 112 on the side facing the drying passage 108.
And 113, and the lower portions are opened 114 and 115, so that the inside of the hot air chamber 104 and the inside of the exhaust air chamber 106 are connected to the cross-downward flow-out chamber 111. Therefore, with the above configuration, the hot air chamber 104, the exhaust air chamber 106, and the drying passage 108 can be formed to have a short length, and at the same time, the number of them can be increased to fill the tempering tank 109. Even if the accumulated pressure of the collected grains is large, it is possible to increase the durability without bending the hot air chamber 104 and the air exhaust chamber 106.
Also, the number of the exhaust air chambers 106 can be increased to reduce the air blowing resistance of the hot air blown from the hot air blowing chamber 102 and increase the amount of air blown from the hot air blowing chamber 102. Further, by opening 114 and 115 at the bottom of the hot air chamber 104 ... and the exhaust air chamber 106 ..., part of dust and the like mixed in the grain flowing down the drying passage 108 ... Hot air chamber 104 from 113 ………
And even if it enters the air exhaust chamber 106 ..., the dust and the like are not accumulated on the hot air chamber 104 ... And the air exhaust chamber 106 .. It is possible to prevent a fire accident in the grain dryer by causing the dust to flow down to the feeding chamber 111 and burning the accumulated dust and the like.

In addition, the hot air chamber 104 ... and the exhaust chamber 106 ...
Since a plurality of cross-down feed-out chambers 111 ... are formed by a plurality of chevron-shaped partition walls 110 immediately below, the grain flow divided in the front-rear direction in the drying passage 108 ... After passing through ………, this time the flow is diverted to the left and right to cross-flow down to efficiently mix and mix the grains with different initial moisture content values, and at the same time improve the fluidity of the grains and dry the grains. It is possible to dry uniformly without causing unevenness and unevenness in flowing down.

In addition, in the above-mentioned cross-flowing delivery room 111 ...
Since the grain that has flowed through 08 ………… is always full,
Leakage of hot air and dust air can be prevented in advance. Yamagata partition wall 11
At each valley of 0 ………, a feeding port 116 along the horizontal direction ……
.. are opened, and intermittently rotated feeding rolls 117 ..... are rotatably mounted on the feeding ports 116 .. In the lower part of the cross-down flow-out delivery chamber 111 ...
A pickup chamber 118 surrounded by a and 101b is provided, and
In the lower space between the hot air blowing chamber 102 and the dust collecting chamber 103, the discharge gutter 11
9 is provided along the horizontal direction, and this connects the discharge gutter 119 with the discharge chamber 118. A discharge screw 120 is rotatably provided horizontally inside the discharge gutter 119, and one end of the discharge gutter 119 is connected to a lower portion of a circulation elevator 121 erected on one side of the dryer main body 101. Circulator lift 1
The upper part of 21 is connected to the supply start end side of a carry-in gutter 122 which is horizontally installed on the top of the dryer main body 101 along the lateral direction.

On the front side of the hot air blowing chamber 102 and the rear side of the dust exhaust chamber 103, a burner device 123 having a burner 124 stored therein and a suction / exhaust device 125 having a suction / exhaust device 126 rotatably stored therein are mounted respectively. The burner device 123 and the hot air blowing chamber 102,
The suction / exhaust air device 125 is connected to the dust / exhaust air chamber 103, and the burner device 123 and the suction / exhaust air chamber device 125 are interchangeable so that their mounting positions can be freely exchanged in the front / rear direction. Depending on the installation conditions at the work site,
The dryer main body 101 is configured to be selectable on the front side or the rear side.

Denoted at 127 are a plurality of hot air jet ducts which are provided laterally at intervals in the conditioning passage 109 above the drying passage 108, and the hot air jet ducts 127 are formed by chevron wall plates 128 whose bottom surface is open. In addition, a large number of hot air jet holes 129 ... Are drilled on the wall surface of the chevron wall plate 128, and one end of each of the hot air jet ducts 127.
It is connected to 02 and is formed in a sealed shape on the tip side. Therefore, the dry hot air that has entered the hot air blowing chambers 102 in a large number of hot air blowing ducts 127 ....... is blown downward in the same direction as the grain flow direction, and so-called parallel flow drying is performed, so that there is no cracking of the body. Can perform high-speed drying. 130 is a conditioning tank higher than the hot air jet duct 127.
Of the plurality of far infrared heaters arranged in 109, the base end side of the far infrared heater 130 is mounted on the canopies 131, 131 provided on both sides of the carry-in gutter 122 in a swinging state. 132
Is a transparent protective body for preventing the grain dropped from the carry-in gutter 122 from colliding with the far-infrared heater 130.

Effect of the Invention In short, the present invention is a tempering tank when circulating and drying grain.
Grains that have been supplied to the upper position of 109 in a scattered state many times are evenly exposed to the irradiation heat of the far-infrared heater 130 that can swing, and the temperature of the grains is rapidly increased. The number of hot air jet ducts that can be transferred to the side
From 127, it can be dried slowly with dry hot air blown in parallel to the direction of grain flow, so the tempering effect can be improved and the drying can be promoted. Removes the dew condensation phenomenon that tends to occur on the inner wall of the tempering tank 109 by removing it without staying in the tempering tank 109 by the dry hot air, and allows the grain to flow smoothly without causing unevenness of the grain flow and is always uniform and of good quality. The effect of being able to obtain the dry grains of is obtained in a short time.

[Brief description of drawings]

FIG. 1 shows an embodiment of a grain drying apparatus according to the present invention. FIG. 1 is a vertical front view, FIG. 2 is a side view in which a part of a main part is broken, and FIG. 3 is a conventional apparatus. Sectional front view, No. 4
The figure is a vertical side view of the conventional device. 101 ... Dryer main body, 102 ... Hot air blowing chamber, 103 ... Dust ventilation chamber, 1
09… Conditioning tank, 127… Hot air jet duct, 130… Far infrared heater

Claims (1)

[Scope of utility model registration request] 1. A hot air blower chamber and a dust exhaust air chamber are provided symmetrically along the horizontal direction on both left and right sides of a horizontally long rectangular tube-shaped dryer main body, and the hot air blower chamber and the dust exhaust air chamber are provided. In the upper part of the tempering tank installed between the two, one end is connected to the hot air blowing chamber, and a plurality of hot air blowing ducts that blow a part of the dry hot air downward are horizontally arranged at intervals and the hot air blowing is performed. A grain drying device characterized in that a far-infrared heater capable of swinging movement is provided in the tempering tank above the duct.